Sit and calm yourself. Take a comfortable posture, with your feet flat on the floor if you are seated on a chair, and keep your back straight. Close your eyes.
Become aware of the fact that you are breathing. Do not manipulate your breathing. Just be aware that you are breathing in and out. As you breathe out, relax the different parts of your body: have you closed your eyes too tight? Relax your facial muscles. You can actually let go of your lower jaw without opening your mouth. Enjoy the moment.
Relax your neck, your shoulders, and above all your stomach. Keep your back straight.
Keep paying attention to your breathing. Each time you realise your mind was wandering, bring back your attention to your breathing. Be here and now!
Now and then become aware of your feelings. How do you feel?
End the exercise by becoming aware of the fact that you are in the presence of God. Be at peace!